Problem:The remote that controls the HD cable box for the basement HD cable box very infrequently will change the channel on the second floor HD cable box. It happens very infrequently, but it does happen. I need to know why this is happening. Here are the details.

Placement of Equipment:HD cable box on second floor HD cable box in basementTwo Mrf-350 ir Receivers set up side by side each other in the basement. RFX-250 RF Sensor Antenna Module mounted on the wall on the first floor. This antenna module feeds directly to the ir receiver (id#8) that sends ir to the second floor HD. A jumper wire from that ir receiver sends rf to the ir receiver that sends ir to the basement HD cable box id#4.

Settings On MX 350 Remote that controls Second Floor HD Cable Box:id#: id#8 (all devices on this remote are set to id#8)IR/RF: RF only for all devices on this remotePort: 1 (this is the port emitting ir to second floor HD cable box)

Settings On MX 350 Remote That Controls First Floor HD Cable Box:id#: id#4 (all devices on this remote are set to id#4)IR/RF: RF only for all devices on this remotePort: 2 (this is the port emitting ir to basement HD cable box)

Settings On Both ir Receivers:id# Setting On Mrf-350 ir Receiver Sending ir to Second Floor HD Cable Box:id#8port 1 is emitting ir for second floor HD cable box and port output is set to as high as possible because it is a long run to emitter, and if not set wide open emitter does not receive ir.

id# Setting On Mrf-350 ir Receiver Sending ir to Basement HD Cable Box:id#4 port 2 is emitting ir for Basement HD cable box, and the port output is set to as high as possible because it is a long run to emitter, and if not set wide open emitter does not receive ir.